The English phrase 'vernal equinox' refers to the spring[date] of equal night [and day]. For starting late March, the day is about equal to the night in length. It represents the end of the shorter days and longer nights of winter. And it represents the beginning of the longer days and shorter nights of summer. The equivalent in Latin is aequinoctium vernalis. For the noun 'aequinoctium' means 'equal night'. And the adjective 'vernalis' means 'of or relating to spring'.
I'm assuming you mean Vernal equinox. It is on 21st March.
The adjectives vernal and autumnal mean "of spring" and "of autumn (fall)" respectively. The equinox, when the day and night are even, occurs twice a year. Once in spring and once in autumn (fall) as we move from the extremes of the summer and winter solstices. Therefore we have a vernal equinox (in spring) and an autumnal equinox (in autumn/fall).
If you are referring to Ostara, it is the Pagan Sabbat celebrated at the Vernal (Spring) Equinox. It is named for a Greek goddess of Spring.
Equinox is the time of year when the day and night are equal, which occurs in March and September. They are known as the Vernal and Autumnal Equinoxes.
what does the Latin phrase ''Si Hoc'' mean
The phrase is in Latin, and it translates to "It is."
There is no such English word as "burnal" - if you mean "vernal" that is the spring equinox, the point during the Northern hemisphere's spring season when the Sun crosses the equator and all of Earth gets a 12 hour day and a 12 hour night.
365.25 days. If you want a more exact answer you have to specify whether you mean the vernal equinox year, the sidereal year or the tropical year.
With you all.
From the former.
It is finish
The vernal equinox, and the autumnal equinox, happen in a single moment for the entire globe; they are not on-going phenomena that start at one time and end at a later time. The vernal equinox (in the north) will be March 20 2013 at 11:02 UT, which is for all practical purposes the same as 11:02AM, Greenwich Mean Time. This is the autumnal equinox in the southern hemisphere.Each year the actual time of the equinox changes by several hours, a table showing all forthcoming times and dates can be found on the related link.